What was the error? Make sure you're using the DOS version, use dosbox svn and it's much easier if you install it on a pc first then just copy over the files to your switch
Thanks for your answer. The error is : retroarch crash when i launch SC2000.exe and i get back to the switch menu. I downloaded the cd version which contain dos version. I’ll try to install on Windows first as you advise me to do. Have a nice sunday